Search a number
-
+
208248085 = 541649617
BaseRepresentation
bin11000110100110…
…01110100010101
3112111212002200001
430122121310111
5411302414320
632355251301
75106036163
oct1432316425
9474762601
10208248085
11a7606961
12598a9b31
13341b4626
141d92c233
151343820a
hexc699d15

208248085 has 4 divisors (see below), whose sum is σ = 249897708. Its totient is φ = 166598464.

The previous prime is 208248067. The next prime is 208248091. The reversal of 208248085 is 580842802.

208248085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580842802 = 2290421401.

It can be written as a sum of positive squares in 2 ways, for example, as 144216081 + 64032004 = 12009^2 + 8002^2 .

It is a cyclic number.

It is not a de Polignac number, because 208248085 - 211 = 208246037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20824804 + ... + 20824813.

It is an arithmetic number, because the mean of its divisors is an integer number (62474427).

Almost surely, 2208248085 is an apocalyptic number.

It is an amenable number.

208248085 is a deficient number, since it is larger than the sum of its proper divisors (41649623).

208248085 is an equidigital number, since it uses as much as digits as its factorization.

208248085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41649622.

The product of its (nonzero) digits is 40960, while the sum is 37.

The square root of 208248085 is about 14430.8033386919. The cubic root of 208248085 is about 592.7346812567.

The spelling of 208248085 in words is "two hundred eight million, two hundred forty-eight thousand, eighty-five".

Divisors: 1 5 41649617 208248085